package com.sky.service.impl;

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONArray;
import com.alibaba.fastjson.JSONObject;
import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.context.BaseContext;
import com.sky.dto.*;
import com.sky.entity.*;
import com.sky.exception.AddressBookBusinessException;
import com.sky.exception.OrderBusinessException;
import com.sky.exception.ShoppingCartBusinessException;
import com.sky.mapper.*;
import com.sky.result.PageResult;
import com.sky.service.OrderService;
import com.sky.utils.HttpClientUtil;
import com.sky.utils.WeChatPayUtil;
import com.sky.vo.OrderPaymentVO;
import com.sky.vo.OrderStatisticsVO;
import com.sky.vo.OrderSubmitVO;
import com.sky.vo.OrderVO;
import com.sky.websocket.WebSocketServer;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import org.springframework.util.CollectionUtils;

import java.math.BigDecimal;
import java.time.LocalDateTime;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.stream.Collectors;

/**
 * @author rookie001
 * @creat 2023-05-02-10:11
 */
@Service
@Slf4j
public class OrderServiceImpl implements OrderService {
    @Autowired
    private OrderMapper orderMapper;
    @Autowired
    private OrderDetailMapper orderDetailMapper;
    @Autowired
    private ShoppingCartMapper shoppingCartMapper;
    @Autowired
    private AddressBookMapper addressBookMapper;
    @Autowired
    private UserMapper userMapper;
    @Autowired
    private WeChatPayUtil weChatPayUtil;
    @Autowired
    private WebSocketServer webSocketServer;
    //用户下单
    @Transactional
    @Override
    public OrderSubmitVO submitOrder(OrdersSubmitDTO ordersSubmitDTO) {
        //判断（收获地址，超出配送范围，购物车为空）
        AddressBook addressBook = addressBookMapper.getById(ordersSubmitDTO.getAddressBookId());
        if (addressBook == null) {
            throw new AddressBookBusinessException(MessageConstant.ADDRESS_BOOK_IS_NULL);
        }
        //检查用户的收货地址是否超出配送范围
        checkOutOfRange(addressBook.getCityName() + addressBook.getDistrictName() + addressBook.getDetail());

        Long userId = BaseContext.getCurrentId();
        ShoppingCart shoppingCart = new ShoppingCart();
        shoppingCart.setUserId(userId);
        //查询当前用户购物车数据
        List<ShoppingCart> shoppingCartList = shoppingCartMapper.list(shoppingCart);
        if (shoppingCartList == null && shoppingCartList.size() == 0) {
            throw new ShoppingCartBusinessException(MessageConstant.SHOPPING_CART_IS_NULL);
        }
        //构造订单数据
        Orders order = new Orders();
        BeanUtils.copyProperties(ordersSubmitDTO, order);
        order.setPhone(addressBook.getPhone());
        order.setAddress(addressBook.getDetail());
        order.setConsignee(addressBook.getConsignee());
        order.setNumber(String.valueOf(System.currentTimeMillis()));
        order.setUserId(userId);
        order.setStatus(Orders.PENDING_PAYMENT);
        order.setPayStatus(Orders.UN_PAID);
        order.setOrderTime(LocalDateTime.now());
        //订单表插入一条数据
        orderMapper.insert(order);
        //订单明细数据
        List<OrderDetail> orderDetailList = new ArrayList<>();
        for (ShoppingCart cart : shoppingCartList) {
            OrderDetail orderDetail = new OrderDetail();
            BeanUtils.copyProperties(cart, orderDetail);
            orderDetail.setOrderId(order.getId());
            orderDetailList.add(orderDetail);
        }
        //向明细表插入n条数据
        orderDetailMapper.insertBatch(orderDetailList);
        //清理购物车中的数据
        shoppingCartMapper.deleteByUserId(userId);
        //封装返回结果
        OrderSubmitVO orderSubmitVO = OrderSubmitVO.builder()
                .id(order.getId())
                .orderNumber(order.getNumber())
                .orderAmount(order.getAmount())
                .orderTime(order.getOrderTime())
                .build();

        return orderSubmitVO;
    }
    @Value("${sky.shop.address}")
    private String shopAddress;
    @Value("${sky.baidu.ak}")
    private String ak;
//判断用户收获地址是否超出配送范围
    private void checkOutOfRange(String address) {
        Map map=new HashMap();
        map.put("address",shopAddress);
        map.put("ak",ak);
        map.put("output","json");
        //获取店铺的经纬度坐标
        String shopCoordinate= HttpClientUtil.doGet("https://api.map.baidu.com/geocoding/v3",map);
        JSONObject jsonObject = JSON.parseObject(shopCoordinate);
        if(!jsonObject.getString("status").equals("0")){
            throw new OrderBusinessException("店铺地址解析失败");
        }
        //数据解析
        JSONObject location = jsonObject.getJSONObject("result").getJSONObject("location");
        String lat = location.getString("lat");
        String lng = location.getString("lng");
        //店铺经纬度坐标
        String shopLngLat = lat + "," + lng;
        map.put("address",address);
        //获取用户收获地址的经纬度坐标
        String userCoordinate = HttpClientUtil.doGet("https://api.map.baidu.com/geocoding/v3", map);

        jsonObject = JSON.parseObject(userCoordinate);
        if(!jsonObject.getString("status").equals("0")){
            throw new OrderBusinessException("收货地址解析失败");
        }
        //数据解析
        location = jsonObject.getJSONObject("result").getJSONObject("location");
        lat = location.getString("lat");
        lng = location.getString("lng");
        //用户收获地址经纬度坐标
        String userLngLat = lat + "," + lng;

        map.put("origin",shopLngLat);
        map.put("destination",userLngLat);
        map.put("steps_info","0");

        //路线规划
        String json = HttpClientUtil.doGet("https://api.map.baidu.com/directionlite/v1/driving", map);

        jsonObject = JSON.parseObject(json);
        if(!jsonObject.getString("status").equals("0")){
            throw new OrderBusinessException("配送路线规划失败");
        }
        //数据解析
        JSONObject result = jsonObject.getJSONObject("result");
        JSONArray jsonArray = (JSONArray) result.get("routes");
        Integer distance = (Integer) ((JSONObject) jsonArray.get(0)).get("distance");

        if(distance > 5000){
            //配送距离超过5000米
            throw new OrderBusinessException("超出配送范围");
        }

    }

    // 订单支付
    public OrderPaymentVO payment(OrdersPaymentDTO ordersPaymentDTO) throws Exception {
        // 当前登录用户id
        Long userId = BaseContext.getCurrentId();
        User user = userMapper.getById(userId);

        //调用微信支付接口，生成预支付交易单
        JSONObject jsonObject = weChatPayUtil.pay(
                ordersPaymentDTO.getOrderNumber(), //商户订单号
                new BigDecimal(0.01), //支付金额，单位 元
                "苍穹外卖订单", //商品描述
                user.getOpenid() //微信用户的openid
        );

        if (jsonObject.getString("code") != null && jsonObject.getString("code").equals("ORDERPAID")) {
            throw new OrderBusinessException("该订单已支付");
        }

        OrderPaymentVO vo = jsonObject.toJavaObject(OrderPaymentVO.class);
        vo.setPackageStr(jsonObject.getString("package"));

        return vo;
    }

    //支付成功，修改订单状态

    public void paySuccess(String outTradeNo) {
        // 当前登录用户id
        Long userId = BaseContext.getCurrentId();

        // 根据订单号查询当前用户的订单
        Orders ordersDB = orderMapper.getByNumberAndUserId(outTradeNo, userId);

        // 根据订单id更新订单的状态、支付方式、支付状态、结账时间
        Orders orders = Orders.builder()
                .id(ordersDB.getId())
                .status(Orders.TO_BE_CONFIRMED)
                .payStatus(Orders.PAID)
                .checkoutTime(LocalDateTime.now())
                .build();

        orderMapper.update(orders);
        //////////////////////////////////////////////
        Map map = new HashMap();
        map.put("type", 1);//消息类型，1表示来单提醒
        map.put("orderId", orders.getId());
        map.put("content", "订单号：" + outTradeNo);

        //通过WebSocket实现来单提醒，向客户端浏览器推送消息
        webSocketServer.sendToAllClient(JSON.toJSONString(map));
    }

    //查看历史订单
    @Override
    public PageResult historyByUesrID(int page, int pageSize, Integer status) {
        //设置分页
        PageHelper.startPage(page, pageSize);
        OrdersPageQueryDTO ordersPageQueryDTO = new OrdersPageQueryDTO();
        ordersPageQueryDTO.setUserId(BaseContext.getCurrentId());
        ordersPageQueryDTO.setStatus(status);
        //分页查询
        Page<Orders> pageQuery = orderMapper.pageQuery(ordersPageQueryDTO);
        List<OrderVO> list = new ArrayList<>();
        if (pageQuery != null && pageQuery.getTotal() > 0) {
            for (Orders orders : pageQuery) {
                Long orderId = orders.getId();
                //查询订单明细
                List<OrderDetail> orderDetails = orderDetailMapper.getByorderId(orderId);
                OrderVO orderVO = new OrderVO();
                BeanUtils.copyProperties(orders, orderVO);
                orderVO.setOrderDetailList(orderDetails);
                list.add(orderVO);
            }
        }
        return new PageResult(pageQuery.getTotal(), list);
    }

    //查询订单明细
    @Override
    public OrderVO details(Long id) {
        Orders orders = orderMapper.getById(id);
        List<OrderDetail> orderDetailList = orderDetailMapper.getByorderId(id);
        OrderVO orderVO = new OrderVO();
        BeanUtils.copyProperties(orders, orderVO);
        orderVO.setOrderDetailList(orderDetailList);
        return orderVO;
    }

    //取消订单
    @Override
    public void cancelOrder(Long id) throws Exception {
        //根据id查询订单
        Orders ordersAll = orderMapper.getById(id);
        if (ordersAll == null) {
            throw new OrderBusinessException(MessageConstant.ORDER_NOT_FOUND);
        }
        //判断是否是待接单状态
        if (ordersAll.getStatus() > 2) {
            throw new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);
        }

        Orders orders = new Orders();
        orders.setId(ordersAll.getId());
        if (ordersAll.getStatus().equals(Orders.TO_BE_CONFIRMED)) {
            //调用微信支付退款接口
            weChatPayUtil.refund(
                    ordersAll.getNumber(), //商户订单号
                    ordersAll.getNumber(), //商户退款单号
                    new BigDecimal(0.01),//退款金额，单位 元
                    new BigDecimal(0.01));//原订单金额

            //支付状态修改为 退款
            orders.setPayStatus(Orders.REFUND);
        }
        //更新订单状态 取消原因 取消时间
        orders.setStatus(Orders.CANCELLED);
        orders.setCancelReason("用户取消");
        orders.setCancelTime(LocalDateTime.now());
        orderMapper.update(orders);
    }

    //再来一单
    @Override
    public void repetition(Long id) {
        //查询当前用户ID
        Long userId = BaseContext.getCurrentId();
        //根据订单id查询当前订单详细
        List<OrderDetail> orderDetails = orderDetailMapper.getByorderId(id);
        //将订单详细对象转换为购物车对象
        List<ShoppingCart> shoppingCarts = orderDetails.stream().map(orderDetail ->
                        new ShoppingCart(null, orderDetail.getName()
                                , userId, orderDetail.getDishId(), orderDetail.getSetmealId(), orderDetail.getDishFlavor()
                                , orderDetail.getNumber(), orderDetail.getAmount(), orderDetail.getImage(), LocalDateTime.now()))
                .collect(Collectors.toList());//转换成list
        //将原订单详细里的菜品信息重新复制到购物车
        for (ShoppingCart shoppingCart : shoppingCarts) {
            //将购物车对象批量添加到数据库
            shoppingCartMapper.insert(shoppingCart);
        }
    }

    //订单搜索
    @Override
    public PageResult conditionSearch(OrdersPageQueryDTO ordersPageQueryDTO) {
        PageHelper.startPage(ordersPageQueryDTO.getPage(), ordersPageQueryDTO.getPageSize());
        Page<Orders> page = orderMapper.pageQuery(ordersPageQueryDTO);
        //部分订单状态 需要额外返回订单菜品信息 将Order转化为OrderVO
        List<OrderVO> orderVOList = getOrderVOList(page);
        return new PageResult(page.getTotal(), orderVOList);
    }


    private List<OrderVO> getOrderVOList(Page<Orders> page) {
        //返回订单菜品信息
        List<OrderVO> orderVOList = new ArrayList<>();
        List<Orders> ordersList = page.getResult();
        if (!CollectionUtils.isEmpty(ordersList)) {
            for (Orders orders : ordersList) {
                OrderVO orderVO = new OrderVO();
                BeanUtils.copyProperties(orders, orderVO);
                String orderDishes = getOrderDishesStr(orders);
                //将订单菜品信息封装到orderVO中，并添加到OrderVOList
                orderVO.setOrderDishes(orderDishes);
                orderVOList.add(orderVO);
            }
        }
        return orderVOList;
    }

    //根据订单id获取菜品信息
    private String getOrderDishesStr(Orders orders) {
        List<OrderDetail> orderDetailList = orderDetailMapper.getByorderId(orders.getId());
        //将每一条订单菜品信息拼接为字符串（菜品*数量）
        List<String> orderDishList = orderDetailList.stream().map(orderDetail -> {
            String orderDish = orderDetail.getName() + "*" + orderDetail.getNumber() + ";";
            return orderDish;
        }).collect(Collectors.toList());
        return String.join("", orderDishList);
    }

    //各个订单统计
    @Override
    public OrderStatisticsVO getStatistics() {
        Integer toBeConfirmed = orderMapper.countNum(Orders.TO_BE_CONFIRMED);
        Integer confirmed = orderMapper.countNum(Orders.CONFIRMED);
        Integer deliveryInProgress = orderMapper.countNum(Orders.DELIVERY_IN_PROGRESS);
        OrderStatisticsVO orderStatisticsVO = new OrderStatisticsVO();
        orderStatisticsVO.setToBeConfirmed(toBeConfirmed);
        orderStatisticsVO.setConfirmed(confirmed);
        orderStatisticsVO.setDeliveryInProgress(deliveryInProgress);
        return orderStatisticsVO;
    }

    //接单
    @Override
    public void confirm(OrdersConfirmDTO ordersConfirmDTO) {
        Orders orders = Orders.builder()
                .id(ordersConfirmDTO.getId())
                .status(Orders.CONFIRMED)
                .build();
        orderMapper.update(orders);
    }

    //拒单
    @Override
    public void rejection(OrdersRejectionDTO ordersRejectionDTO) throws Exception {
        Orders orders = orderMapper.getById(ordersRejectionDTO.getId());
        //根据id查询订单
        //订单只有存在且状态为 待接单 才可以拒单
        if (orders == null || !orders.getStatus().equals(Orders.TO_BE_CONFIRMED)) {
            throw new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);
        }
        //支付状态
        Integer payStatus = orders.getPayStatus();

        if (payStatus == Orders.PAID) {
            //用户已支付 需要退款
            String refund = weChatPayUtil.refund(
                    orders.getNumber(),
                    orders.getNumber(),
                    new BigDecimal(0.01),
                    new BigDecimal(0.01));
            log.info("申请退款：{}", refund);

        }
        //拒单需要退款 根据订单id更新订单状态，拒单原因，取消时间
        Orders orders1 = new Orders();
        orders1.setId(orders.getId());
        orders1.setStatus(orders.getStatus());
        orders1.setRejectionReason(orders.getRejectionReason());
        orders1.setCancelTime(orders.getCancelTime());

        orderMapper.update(orders1);
    }

    //取消订单
    @Override
    public void cancel(OrdersCancelDTO ordersCancelDTO) throws Exception {
        // 根据id查询订单
        Orders ordersDB = orderMapper.getById(ordersCancelDTO.getId());

        //支付状态
        Integer payStatus = ordersDB.getPayStatus();
        if (payStatus == 1) {
            //用户已支付，需要退款
            String refund = weChatPayUtil.refund(
                    ordersDB.getNumber(),
                    ordersDB.getNumber(),
                    new BigDecimal(0.01),
                    new BigDecimal(0.01));
            log.info("申请退款：{}", refund);
        }

        // 管理端取消订单需要退款，根据订单id更新订单状态、取消原因、取消时间
        Orders orders = new Orders();
        orders.setId(ordersCancelDTO.getId());
        orders.setStatus(Orders.CANCELLED);
        orders.setCancelReason(ordersCancelDTO.getCancelReason());
        orders.setCancelTime(LocalDateTime.now());
        orderMapper.update(orders);
    }

    //派送订单
    @Override
    public void delivery(Long id) {
        Orders orders = orderMapper.getById(id);
        if (orders == null||!orders.getStatus().equals(Orders.CANCELLED)) {
            throw new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);
        }
        Orders orders1 = new Orders();
        orders1.setId(orders.getId());
        orders1.setStatus(orders.getStatus());
        orderMapper.update(orders1);
    }
    //完成订单
    @Override
    public void complete(Long id) {
        Orders orders = orderMapper.getById(id);
        if (orders == null||!orders.getStatus().equals(Orders.DELIVERY_IN_PROGRESS)) {
            throw new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);
        }
        Orders orders1 = new Orders();
        orders1.setId(orders.getId());
        // 更新订单状态,状态转为完成
        orders1.setStatus(Orders.COMPLETED);
        orders1.setDeliveryTime(LocalDateTime.now());
        orderMapper.update(orders1);
    }
    //用户催单
    @Override
    public void reminder(Long id) {
        // 查询订单是否存在
        Orders orders = orderMapper.getById(id);
        if (orders == null) {
            throw new OrderBusinessException(MessageConstant.ORDER_NOT_FOUND);
        }

        //基于WebSocket实现催单
        Map map = new HashMap();
        map.put("type", 2);//2代表用户催单
        map.put("orderId", id);
        map.put("content", "订单号：" + orders.getNumber());
        webSocketServer.sendToAllClient(JSON.toJSONString(map));
    }

}